Highlights from a 2 minute take at my local juggling club in Kasuga, Japan.3-up pirouette, 2 stage pirouette and the contorted behind the back thingy, forgot what that's called!
Back catch - Throw the hat, bend over and catch it on your back.
Hold the hat crown up in an inside grip. Throw the hat as if you were doing a low throw to head, and at the last minute bend from the waist and duck under it so is lands flat on your back.